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Finding the Fourth Proportional to 107,938.60, 161,907.90 and 37,808.80

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Solution

The fourth proportional to 107,938.60, 161,907.90 and 37,808.80 is: 56,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,938.60 : 161,907.90 = 37,808.80 : x
  2. Step 2: Convert to fraction form
    107,938.60/161,907.90 = 37,808.80/x
  3. Step 3: Cross multiply
    107,938.60x = 161,907.90 × 37,808.80
  4. Step 4: Simplify right side
    107,938.60x = 6,121,543,409.52
  5. Step 5: Solve for x
    x = 6,121,543,409.52/107,938.60
  6. Step 6: Final answer
    x = 56,713.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.